Ds\Vector::sum

(PECL ds >= 1.0.0)

Ds\Vector::sumReturns the sum of all values in the vector

说明

public Ds\Vector::sum ( void ) : number

Returns the sum of all values in the vector.

Note:

Arrays and objects are considered equal to zero when calculating the sum.

参数

此函数没有参数。

返回值

The sum of all the values in the vector as either a float or int depending on the values in the vector.

范例

Example #1 Ds\Vector::sum() integer example

<?php
$vector 
= new \Ds\Vector([123]);
var_dump($vector->sum());
?>

以上例程的输出类似于:

int(6)

Example #2 Ds\Vector::sum() float example

<?php
$vector 
= new \Ds\Vector([12.53]);
var_dump($vector->sum());
?>

以上例程的输出类似于:

float(6.5)